Manual 2100-533a page 1 of 12 operation instructions model: 920-0074 qwserv energy recovery ventilator with exhaust for use with bard 2 through 5 ton qw*s series bard manufacturing company, inc. Bryan, ohio 43506 since 1914...Moving ahead, just as planned. Manual: 2100-533a supersedes: 2100-533 file...
Manual 2100-533a page 2 of 12 contents electrical specifications .......................................... 3 general description of erv ................................... 3 control requirements ............................................ 3 recommended control sequences ....................... 4 c...
Manual 2100-533a page 3 of 12 general description the energy recovery ventilator was designed to provide energy efficient, cost effective ventilation to meet i. A. Q. (indoor air quality) requirements while still maintaining good indoor comfort and humidity control for a variety of applications such...
Manual 2100-533a page 4 of 12 the erv units are wired from the factory on medium intake and low exhaust speeds. The erv is equipped with independently controlled 3-speed motor to provide the capability of adjusting the ventilation rates to the requirements of the specific application and to be able ...
Manual 2100-533a page 5 of 12 performance and application data table 2 summer cooling performance (indoor design conditions 75° db / 62° wb) legend vlt = ventilation load – total hrt = heat recovery – total vls = ventilation load – sensible hrs = heat recovery – sensible vll = ventilation load – lat...
Manual 2100-533a page 6 of 12 energy recovery ventilator maintenance general information the ability to clean exposed surfaces within air moving systems is an important design consideration for the maintenance of system performance and air quality. The need for periodic cleaning will be a function o...
Manual 2100-533a page 7 of 12 cleanability and performance in order to maintain energy recovery ventilation systems, energy transfer surfaces must be accessible for washing to remove oils, grease, tars and dirt that can impede performance or generate odors. Washing of the desiccant surfaces is requi...
Manual 2100-533a page 8 of 12 figure 2 belt replacement instructions belt replacement instructions mis-2166 route (1) replacement belt in bottom groove of pulley. Route (1) replacement belt in top groove of pulley. If belts "squeak" or "chirp" lubricate lightly with lps-1 or equivalent "dry film" lu...
Manual 2100-533a page 9 of 12 figure 3 hub assembly with ball bearings.
Manual 2100-533a page 10 of 12 2 1 3 456789 10 11 12 2 1 3 208 120 v 480 240 com 24 2 4 3 1 co nt ro l re la y d amper mot or 27 3 mo to r 12 26 1 c asset te mo to r 25 mot or p lug intake 28 28 28 26 c o 2 d is connec t 2 25 25 25 25 28 23 28 23 23 26 26 21 3 4 5 6 7 8 9 10 11 26 in ta ke d am per ...
Manual 2100-533a page 11 of 12 figure 4 disconnect & tape off wire disconnect and tape off for co2 controlled ventilation mis-2759.
Manual 2100-533a page 12 of 12 figure 5 field set co 2 sensor jumpers "an" set to voltage "sw2" set to on "out" set to 20-100% an of f on on of f 0-100% 20-100% vo lt ag e curre nt out sw2sw1 "sw1" set to on mis-2756 qwserv vent package co 2 controller setting for 1000 ppm.
